Plz help I k ow she is incorr3ct but idk if it's c or d
for 15 pts!!!

Quadrilateral wxyz is on a coordinate plane. segment yz is on the line x+y=7 and segment xw is on the line x+y=3. which statement proves how segments yz and xw are related

Table which ratio is equivalent to 3: 7? 6: 7 3: 21 24: 56 15: 30

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?